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#
# (C) COPYRIGHT 2012-2019 ARM Limited. All rights reserved.
#
# This program is free software and is provided to you under the terms of the
# GNU General Public License version 2 as published by the Free Software
# Foundation, and any use by you of this program is subject to the terms
# of such GNU licence.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, you can access it online at
# http://www.gnu.org/licenses/gpl-2.0.html.
#
# SPDX-License-Identifier: GPL-2.0
#
#
menuconfig MALI_MIDGARD
tristate "Mali Midgard series support"
select GPU_TRACEPOINTS if ANDROID
select DMA_SHARED_BUFFER
default n
help
Enable this option to build support for a ARM Mali Midgard GPU.
To compile this driver as a module, choose M here:
this will generate a single module, called mali_kbase.
config MALI_GATOR_SUPPORT
bool "Enable Streamline tracing support"
depends on MALI_MIDGARD
default y
help
Enables kbase tracing used by the Arm Streamline Performance Analyzer.
The tracepoints are used to derive GPU activity charts in Streamline.
config MALI_MIDGARD_DVFS
bool "Enable legacy DVFS"
depends on MALI_MIDGARD && !MALI_DEVFREQ
default n
help
Choose this option to enable legacy DVFS in the Mali Midgard DDK.
config MALI_MIDGARD_ENABLE_TRACE
bool "Enable kbase tracing"
depends on MALI_MIDGARD
default n
help
Enables tracing in kbase. Trace log available through
the "mali_trace" debugfs file, when the CONFIG_DEBUG_FS is enabled
config MALI_DEVFREQ
bool "devfreq support for Mali"
depends on MALI_MIDGARD && PM_DEVFREQ
default y
help
Support devfreq for Mali.
Using the devfreq framework and, by default, the simpleondemand
governor, the frequency of Mali will be dynamically selected from the
available OPPs.
config MALI_DMA_FENCE
bool "DMA_BUF fence support for Mali"
depends on MALI_MIDGARD
default n
help
Support DMA_BUF fences for Mali.
This option should only be enabled if the Linux Kernel has built in
support for DMA_BUF fences.
config MALI_PLATFORM_NAME
depends on MALI_MIDGARD
string "Platform name"
default "devicetree"
help
Enter the name of the desired platform configuration directory to
include in the build. 'platform/$(MALI_PLATFORM_NAME)/Kbuild' must
exist.
# MALI_EXPERT configuration options
menuconfig MALI_EXPERT
depends on MALI_MIDGARD
bool "Enable Expert Settings"
default n
help
Enabling this option and modifying the default settings may produce a driver with performance or
other limitations.
config MALI_CORESTACK
bool "Support controlling power to the GPU core stack"
depends on MALI_MIDGARD && MALI_EXPERT
default n
help
Enabling this feature on supported GPUs will let the driver powering
on/off the GPU core stack independently without involving the Power
Domain Controller. This should only be enabled on platforms which
integration of the PDC to the Mali GPU is known to be problematic.
This feature is currently only supported on t-Six and t-HEx GPUs.
If unsure, say N.
config MALI_PLATFORM_POWER_DOWN_ONLY
bool "Support disabling the power down of individual cores"
depends on MALI_MIDGARD && MALI_EXPERT
default n
help
Enabling this feature will let the driver avoid power down of the
shader cores, the tiler, and the L2 cache.
The entire GPU would be powered down at once through the platform
specific code.
This may be required for certain platform configurations only.
This also limits the available power policies.
If unsure, say N.
config MALI_DEBUG
bool "Debug build"
depends on MALI_MIDGARD && MALI_EXPERT
default n
help
Select this option for increased checking and reporting of errors.
config MALI_FENCE_DEBUG
bool "Debug sync fence usage"
depends on MALI_MIDGARD && MALI_EXPERT && (SYNC || SYNC_FILE)
default y if MALI_DEBUG
help
Select this option to enable additional checking and reporting on the
use of sync fences in the Mali driver.
This will add a 3s timeout to all sync fence waits in the Mali
driver, so that when work for Mali has been waiting on a sync fence
for a long time a debug message will be printed, detailing what fence
is causing the block, and which dependent Mali atoms are blocked as a
result of this.
The timeout can be changed at runtime through the js_soft_timeout
device attribute, where the timeout is specified in milliseconds.
config MALI_NO_MALI
bool "No Mali"
depends on MALI_MIDGARD && MALI_EXPERT
default n
help
This can be used to test the driver in a simulated environment
whereby the hardware is not physically present. If the hardware is physically
present it will not be used. This can be used to test the majority of the
driver without needing actual hardware or for software benchmarking.
All calls to the simulated hardware will complete immediately as if the hardware
completed the task.
config MALI_REAL_HW
def_bool !MALI_NO_MALI
config MALI_ERROR_INJECT
bool "Error injection"
depends on MALI_MIDGARD && MALI_EXPERT && MALI_NO_MALI
default n
help
Enables insertion of errors to test module failure and recovery mechanisms.
config MALI_SYSTEM_TRACE
bool "Enable system event tracing support"
depends on MALI_MIDGARD && MALI_EXPERT
default n
help
Choose this option to enable system trace events for each
kbase event. This is typically used for debugging but has
minimal overhead when not in use. Enable only if you know what
you are doing.
config MALI_2MB_ALLOC
bool "Attempt to allocate 2MB pages"
depends on MALI_MIDGARD && MALI_EXPERT
default n
help
Rather than allocating all GPU memory page-by-page, attempt to
allocate 2MB pages from the kernel. This reduces TLB pressure and
helps to prevent memory fragmentation.
If in doubt, say N
config MALI_PWRSOFT_765
bool "PWRSOFT-765 ticket"
depends on MALI_MIDGARD && MALI_EXPERT
default n
help
PWRSOFT-765 fixes devfreq cooling devices issues. The fix was merged
in kernel v4.10, however if backported into the kernel then this
option must be manually selected.
If using kernel >= v4.10 then say N, otherwise if devfreq cooling
changes have been backported say Y to avoid compilation errors.
config MALI_MEMORY_FULLY_BACKED
bool "Memory fully physically-backed"
depends on MALI_MIDGARD && MALI_EXPERT
default n
help
This option enables full physical backing of all virtual
memory allocations in the kernel. Notice that this build
option only affects allocations of grow-on-GPU-page-fault
memory.
config MALI_DMA_BUF_MAP_ON_DEMAND
bool "Map imported dma-bufs on demand"
depends on MALI_MIDGARD
default n
help
This option caused kbase to set up the GPU mapping of imported
dma-buf when needed to run atoms. This is the legacy behaviour.
This is intended for testing and the option will get removed in the
future.
config MALI_DMA_BUF_LEGACY_COMPAT
bool "Enable legacy compatibility cache flush on dma-buf map"
depends on MALI_MIDGARD && !MALI_DMA_BUF_MAP_ON_DEMAND
default y
help
This option enables compatibility with legacy dma-buf mapping
behavior, then the dma-buf is mapped on import, by adding cache
maintenance where MALI_DMA_BUF_MAP_ON_DEMAND would do the mapping,
including a cache flush.
config MALI_HW_ERRATA_1485982_NOT_AFFECTED
bool "Disable workaround for BASE_HW_ISSUE_GPU2017_1336"
depends on MALI_MIDGARD && MALI_EXPERT
default n
help
This option disables the default workaround for GPU2017-1336. The
workaround keeps the L2 cache powered up except for powerdown and reset.
The workaround introduces a limitation that will prevent the running of
protected mode content on fully coherent platforms, as the switch to IO
coherency mode requires the L2 to be turned off.
config MALI_HW_ERRATA_1485982_USE_CLOCK_ALTERNATIVE
bool "Use alternative workaround for BASE_HW_ISSUE_GPU2017_1336"
depends on MALI_MIDGARD && MALI_EXPERT && !MALI_HW_ERRATA_1485982_NOT_AFFECTED
default n
help
This option uses an alternative workaround for GPU2017-1336. Lowering
the GPU clock to a, platform specific, known good frequeuncy before
powering down the L2 cache. The clock can be specified in the device
tree using the property, opp-mali-errata-1485982. Otherwise the
slowest clock will be selected.
# Instrumentation options.
config MALI_JOB_DUMP
bool "Enable system level support needed for job dumping"
depends on MALI_MIDGARD && MALI_EXPERT
default n
help
Choose this option to enable system level support needed for
job dumping. This is typically used for instrumentation but has
minimal overhead when not in use. Enable only if you know what
you are doing.
config MALI_PRFCNT_SET_SECONDARY
bool "Use secondary set of performance counters"
depends on MALI_MIDGARD && MALI_EXPERT
default n
help
Select this option to use secondary set of performance counters. Kernel
features that depend on an access to the primary set of counters may
become unavailable. Enabling this option will prevent power management
from working optimally and may cause instrumentation tools to return
bogus results.
If unsure, say N.
source "drivers/gpu/arm/midgard/platform/Kconfig"
source "drivers/gpu/arm/midgard/tests/Kconfig"